Hot-water heater



March 11 1924. x 1.486,482

G. COWLEB' HOT WATER HEATER Filed Aug. 2, 1921 Ian/en to?" G'eorye 'owles Patented Mar. 11, 1924.

UNITED STATES GEORGE GOWLES, OE SACRAMENTO, CALIFORNIA.

HOT-WATER HEATER.

Application filed August 2, 1921. Serial No. 489,168

To all whom it may concern:

Be it known that I, Gnouoe Cowmzs, a citizen of the United States. residing at Sacramento, in the county of Sacramento and State of California, have invented new and useful Improvements in Hot-Water l-leutei-s, of which the following is a specili cation.

This invention. relntes to a water heater, and particularly pertains to a coil manifold therefor.

The present invention is concerned with a water heater in which a plurality of spiral water circulating coils are in communication with a single induction manifold and a single educt-ion manifold; and it is a principal object of the present invention to provide a convenient structure embodying the door frame of the heater and the induction manifold.

The present invention contemplates the use of a'door frame, one of the vertical posts of which is formed to provide an in duction manifold with. which a plurality of circulating coils are in communication. The invention is illustrated by way of example in the accon'ipanying drawing in which Fig, 1 is a view in side elevation showing the present invention and with parts broken away to more clearly disclose the application of the present invention;

Fig. 2 is a view in transverse section through the heater, as seen on the line 2--2, Fig. l, further showing the construction.

Referring more particularly to the draw-' ing, it) indicates an outer cylindrical casing of a hot water heater. Mounted in the bottom of this casing is a gas burner 1.1, while the upper end of the casing is formed with :-i. flue opening 12 through which the products of combustion from the burner may pass. The front of the heater is provided with a swinging door 13. This door is mounted on a vertical hinge rod 14 by lugs l5. 'lhe hinge I'C'tl is supported from the door frame 16 with which the present inveution is particularly concerned This frame has parallel vertical portions 17 and 18, and transverse horizontal portions 19 and 20. The portions 17, 19 and 20 are/of common design to form a door opening, while the post 18 of the door frame is en largcrl and forms a manifold passageway 21, as more clearly indicated in Fig. 2 of the drawing. This post is substantially cylindrical in formation and is tubular. A continuation of the post forms a lip 22 against which the edge of the door 13 may rest when the door is closed. This lip portion is, of course, in suitable alignment with the outer face of the remainder of the door frame, so that a tight. seal will be made between the door frame and the door. A plurality of tapped openings 23 are formed through the wall of the door post 18 and are in communication with the manifold passageway 21. These top ed openings receive the threaded pipes 24 oi the various heating coils 25.

By reference to F lg. 1 of the drawing it will be noted that a plurality of super osed spiral heater coils tire provided, eadli of said coils bein conncted with their respective pipes 24 by a pipe union 26, While the inner ends of the coils are in communication with an eduction pipe 27 through which the heated water will circulate.

It will thus be seen that the present invention provides simple and a compact means whereby heater coils may be placed in communication with an induction manifold, which manifold is conveniently embodied within the structure of the door frame of the heater.

While I have shown the preferred form of myinvention, it is to be understood that various changes may be made by those skilled in the art without departing from the spirit of my invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

L A hot water heater comprising an outer casing having a door opening formed therein, a plurality of circulating coils in the casing, and accessible through said openings, a one piece door frame secured around the marginal edge of said opening, a door hinged to the frame to close the opening, and a water distributing manifold formed as a part of said door frame and separably connected to each of said circulating coils.

2. A hot water heater comprising an outer carng; water circulating coils therein, said casing being formed with an opeinin in the side thereof to permit access to al of the coils; a door frame eircun'iecribing said opening; a door hin ed to one side of the opening for closing t same; and a. water distributing manifold embodied in the opposito side; of the frame to communicate with the circulating soils.

3. A water heater oomprising an outer cylindrical housing; a plurality of separate circulating coils enclosed thereby and disposed in superposed relation toeach other, said housin being formed with on opening in the side wall thereof affording access to the coils; a door frame c ircumscribing said opening; a door hinged to one side of said frame; and a water induction manifold embodied in tho opposite side of the door and with which the various coils communicats 4. In a water heater having an outer casing; a door frame comprising a one-piece rootan uiar member; lugs formed along one vertica post of said frame; a. door hm ed thereto; a water manifold embodied wit in the opposite vertical post of said frame; means for connecting a, water supply pipe to the end of said manifold; and nmans for connecting the manifold with the coils of the wamr heater.

GEORGE OOWLES. 

